Apparatus for treating ore.



F. E. WOODBURY, B. HARRIS & G. H. BENEDICT. APPARATUS FOR TREATING ORE.

APPLICATION FILED APE.2, 1902 914,002, Patented Mar. 2, 1909.

2 SHEETS-SHEET l.

F. E. WOODBURY, B. HARRIS & G. H. BENEDICT.

APPARATUS FOR TREATING ORB.

APPLICATION FILED APR. 2, 1902.

Patented Mar. 2, 1909.

2 SHEBTSSHEET 2 gvumiya 1 77 M ZM/i .Z w w M n m 5 WWW FREDERICK E.WOODBURY,

'lO SAID WOODBURY AND BENEDICT.

OF MILWAUKEE, WISCONSIN, CENTENNIAL HARRY BENEDICT, OF LAKE LINDEN,

AND BENJAMIN HARRIS AND HUHIUAN; SAID IlARIllS ASSIGNOR APPARATUS FORTREATING ORE.

Specification of Letters Patent.

Patented March 2, 1909.

Application filed. April 2, 1902. Serial No. 101,111.

To all whom it may concern:

Be it known that we, FREDERICK E. Woon- BURY, of the city and countv ofMilwaukee and State of Wisconsin, and BENJAMIN HA1:-

6 R18 and (IENIENNIAL HARRY BENEDICT, of Lake Linden, in the county ofHoughton and State of Michigan, citizens of the United States, have inyented certain new and useful Improvements in Apparatus for Treating 10Ore, of which the following is a specification, reference being had tothe accompanying drawing, forming a )art thereof.

Our. invention relates to concentrating plants or apparatus for thetreatment of ores or metal bearing rock. Its main objects are to effecta more complete preliminary classification and separation of theconcentrates and slimes from the ravel and sand or material requiringfurtier treatment, as the ulp or crushed ore or rock is discharged omthe stamp or crusher; to obtain directly and immediately from the pulpas it comes from the crusherone or more finished products .or grades ofconcentrates ready for smelting to reduce the volume of materialrequiring further treatment, after such preliminary classification andseparation is made; to economize in apparatus required for such furthertreatment and thereby cffeet a material saving of water, labor, time andspace; to avoid dilution and consequent loss of slimes; and generally toimprove the construction and operation and to increase the eliiciency ofapmratus for the )reliminary classification of ores and metal caringrock.

It consists in certain novel features in the construction andarrangementof parts and in the combinations of parts hereinafter particularlydescribed and pointed out in the claims.

In theaccompanyingdrawings like letters designate the same parts in theseveral figures.

Figure 1 is a vertical longitudinal section of an orc classifier andseparator embodying an essential part of our invention Fig. 2 is a planview of the same partially broken away; Fig. 3 is a diagram or plan viewon a reduced scale showing the classifier and separator as connectedwith and arranged in relation to a stampipill or ore crusher andvconcentrating jigs to which a portion of the material is delivered forfurther treatment; and Fig. 4 is a vertical cross section on an nlargcdscale of the upper part of the classifier and separator. With apparatusheretofore generally used for treating ore of the kind to which thisinvention is particulartv adapted, the ore as it comes from the crusheris first divided into a number of equal and similar parts. Each of theseparts is then subjected a number of times to the action of upwardcurrents of water, the heavier particles in each classification fallingthrough the upward current and being delivered to jigs for furthertreatment, and the lighter part iclcs' or slimes being finally carriedover the tail of the last scpa rator. It is evident that in such asystem a large amount of water is required, and that most of this wateris added to and dilutes the slimes. This necessitates lnrgcsettlingboxes with overflows, and results in great loss of fine mineralportions, before they are in proper condition for treatment by theapparatus usually employed for recovering slimes.

With the apparatus herein shown and described the slnnes are taken offwith little or no dilution, and the greater part of the concentrates areremoved from the pulp as it comes from the crusher by the prelimimu-yclassification. One or more finished pr od ucts or grades ofconcentrates in condition for smelting are separated and removed fromthe sand, gravel or jigging material requiring further treatment. Theslimcs being separated and conducted off in this preliminaryclassification are not diluted by the addition of water required tograde or classify the pulp according to the old method and by thefurther addition of water to that part of the pulp or to the jiggin mafcrial which requires further treatment. lhis is of prime importance,because the addition of water necessitates extra apparatus such assettling tanks,

employed in connection with the usual hydraulic separators to remove thesur )lUS water from the slimcs preparatory to their concentration onslime tables, and the sep aration of this surplus water carries oil aswaste a large part. of the fine, almost impalpable particles of whichthe shines are composed, thus entailing more or less less, according tothe volume of addit ional water. Hence a material saving in slimes, areduction of apparatus required for further treatment, and a consequentsaving of water flld of labor required forthe operation ofsuch apparatusdesigned to separate and remove from the pulp two grades of rich, heavyconcentrates,--

a fine grade or hutch work, which passesthrough the screen, and acoarser grade taken from the lower part of the jigging bed on thescreen,and to separate from the sand and gravel requiring furthertreatment, slimes with a comparatively small volume of water from whichthey can be readily recovered with little loss.

Referring now to the drawing, dis a horizontally disposed screenarranged over a hutch I) having an inclined bottom and one or moredischarge openings 0, and a water supply; opening (1. At one end of thescreen the hutch communicates with a plunger compartment e, whichextends above the screen and is provided with a reciprocating plunger flooselylitted therein. The plunger fis provided with rods g extendingupwardly through the top plate It and vent tubes 11.

* The plunger rods gare connected with cranks,

eccentrics or other means, not shown, for imparting a reciprocatingmovement to the plunger.

7' is a vertically adjustable shield, which may be conveniently made ofsheet metal bent into'suitable form. It secured by bolts 70 to a flangedplate Z, attached to the tail plate m. The interior of said shieldcommunicates through a horizontal slot or opening a in the plates Z andm with a spout 0, by which a part of the material passing underneath theshield is conducted therefrom for further treatment. The opening a isprovided with a vertically adjustable gate or valve p, for regulatingthe flow of water carrying the sand and gravel from the interior ofshield 7'. It may be adjusted and secured in place by means of a bolt Qpassing through the plate Z and a slotted upward extension of said gate.7* is another vertically adjustable shield arranged within the shieldand extending below 'it. It may be conveniently suipported by means ofslotted straps s, secure )y bolts tto a cross bar a.

e is a rubber hose or flexible pi e leading from the interior of theshield 1 an vertically adjustable within said shield. It may beconveniently supported at its inlet end within the shield by avertically adjustable rod 10,

secured by a bolt and thumb nut :12, to the cross bar a.

y is a box or compartment extending across the tail end of the machineand having an opening 2 at one or each end for conducting off thetailings which overflow the tail plate m.

Referring to Fig. 3, illustrating the arrangement of the classifier andseparator with relation to a stamp mill or ore crusher and. jigs orconcentrators, 2 designates a stamp mi l and 3 two double jigs. The

pulp or crushed ore from the stamp millis delivered by a suitablelaunder or conduit 4, upon the top plate It over the plunger com artmentat the. head end of the classilicr. he discharge spout 0, leading fromthe interior of the shield at the tail end of the classifier, dischargesinto launders or conduits 5 5, leading to the head ends of the jigs 3.The discharge openings 2 at the ends of the box g are connected bysuitable conduits 6, with slime tables or other machines or apparatusfor further treatment of the lighter material which flows over the tailplate m of the classifier.

in the operation of the machine, the material as it comes from the orecrusher 2, containing particles or pieces varying in size from sliniesto coarse gravel, is fed over the plate h upon' the screen a, and issubjected uniformly the entire width of the screen to the pulsations ofwater produced by the plunger f. .The material is thus caused to arrangeitself in layers according to the specific gravity of the iarticlcs, theline heavy particles working downward and passing through the screeninto the hutch b, from which they are removed through the openings c,and the light particles working up ward. The material remaining on thescreen is gradually advanced towards the tail end by the pulsatingcurrent of water. Bythe time it reaches the shield j, the lightestparticles have assumed a position in the upper part of the bed, theheaviest particles a position next to'the screen in the lower part of"the bed, and particles of intermediate weights or specific gravities inlayers or strata between the top and bottom of the bed. by the pulsatingcurrent of water above the lower edge of the shield 7', are carriedaround outside of said shield over the tail plate 'm,

into the box y, from which they are conducted off through conduits 6,for further treatment on slime tables orother apparatus.

By varying the height of the tail plate m,

the size of the largest particles entering into The fine light particlesand slimes held the slimes can be regulated. The heavier materialoccupying the intermediate portion of the be and passing under theshield j, is subjected tothe pulsating current of water as before, andthe lighter particles occupying a position above the lower edge oftheinner shield 1', )ass around it and are discharged through theopening a and spout 0, into the launders 5, by which the sand and gravelare conducted-to the jigs 3 for further treatment. The heavierparticles, lying closer to the screen, pass under the shield 7' and aredrawn off as a concentrate through the hose 1;. By varying the height ofthe intake end ofthis hose a body of concentrates of any desired depthcan be maintained upon the screen to serve as a bed through which thefiner particles or hutch-Work have to pass.

continuously or intermittently;

with a pluralit This will serve alike when the desired coucentrate isol' the same material as the bed and when it is of dillerent material.The height of the shield r with relation to the a screen determining thegrade or character ot' l the material that can pass into it, by verticaladjustment of the shield mineral of any desired concentration may bedischarged therefrom. The outer shield 5 must be adjusted to extend atits lower edge sullicientl into the upper part of the screen bed toireventslinies from passing underneath an entering it with thegravel andsand. The slime separation is also regulated by the gate 1), the area ofthe opening a determining thev amount of water drawn from the screenthrough the shield y', and the amount overflowing the tail plate.

The amount of water discharged through the opening or must be sullicientto remove the gravel and sand, but must not be sufficient to draw fromthe supply which carries the ore to the screen ot ierwise, slimes Willbe drawn oil underneath and through the shield j, with the gravel andsand. When once the proper area of this openin n has been determined andadjusted by the operator, the machine requires no attention except asthe quantity and quality of material treated may materially vary.

'a conduit from the crusher .in; a screen By means of the apparatusconstructed and arranged as herein shown and described, a prelin'iinaryclassification ismade of pulp or crushed ore, into first, fine heavyconcentrate or hutch-work; second, coarse heavy concentrate which isdischarged third, jigging gravel. and sand, or material requiringfurther treatment fourth, slimes.

It will be apparent that by increasing the number of shields, thejigging material or material requiring further treatment, and theconcentrates, ma be further 'subdivided, so that different kinds orgrades of material may be deliver-ml. at the same time fronntheclassifier. The amount of water required to operate this classifier andto separate and rcmox'e the slimes, is less than they required for theoperation of any of the slime separators or pulp classiliers in generaluse, besides, a final concentration of ore is obtained and dilution andloss of shines are avoided. V

, arious chan es in details of constructaon and arrangement of parts maybe made within the spirit and intended scope oi the invention.

We claim:

.I. in apparatus for treating ores the combinatien with a crusher and aconcentrator, of an intermediate classifying comprising a screen andmeans for producing pulsations oi water through the screen and providedoi discharges above the screen, ineludi a slimes discharge, aconcentrates discharge and a discharge for material requiring furthertreatment, means for restricting the volume of water passing out withthe stones, from the discl'iarge for material requiring furthertreatment to the concentrator, and

to the classifying jig, substantially as described.

2. ln apparatus for treating ores the combination with a crusher and aconcentrator, of an intermediate classifying jig compris and means forproducing pulsat ions of water through the screen and provided with aplurality of discharges above the screen, including a slimes dischargeand a discharge for material ret uiring further treatment, and withmeans or restrict in; the volume of water passing out with the slimes, aconduit leading from the discharge for material requiring furthertreatient to the concentrator, and a conduit from the crusher to theclassifying jig, substantially as described.

3. In apparatus for treating ore the combination with a crusher and aconcentrator, of an intermediate classifying jig comprising a screen andmeans for producing pulsations of water through the screen and providedwith a tail plate extending above the screen, a shield terminating atits lower edge below the top of the tail plate, a discharge conduit forslimes which passover the tail plate and means for restricting thevolume of water passing out with the slimes, a conduit for material reuiring further treatmcnt leading from sai shield to the concentrator anda conduit from the crusher to the classifying jig, substantially asdescribed.

4. In apparatus for treating ore the combination with a crusher and aconcentrator, oi. an intermediate classifying jig comprising a screenand means for producing pulsations of water through the screen, andprovided with a tail plate extending above the screen, a verticallyadjustable shield terminatin at its lower edge below the top of the tailp ate and above the screen, a discharge conduit for slimes which passover the tail plate and means for restricting the volume of waterpassing outwith the slimes, comprising a valve for adjusting thedischarge a conduit leading irom said shield; a conduit for materialrewater'through the screen plate extending above with the shines, aconduit for material re uiring further treatment leading from one siield to the concentrator, a discharge conduit for concentrates leadingfrom the other shield, and a conduit from the crusher to the classifyingjig, substantially as described.

6. .In ap )aratus for treating ore the combination wit 1 a crusher and aconcentrator, oi a classifying jig comprising a screen and means forproducing through the screen and irovided with a tail plate extendinabove t 1e screen, vertically adjustable shie ds terminating at theirlower edges at different levels below the top of the tar late and abovethe screen, a d sch arge con uit for slimes which pass over the tailplate and means for restricting the volume of water passing out with theshines, a conduit for material requiring further treatment leading fromthehigher shield to the concentrator, a discharge conduit forconcentrates leading from the lower shield and a conduit from thecrusher to the classifyingjig, substantially as described.

7 In ap aratus for treating ore the'combination with a crusher and aconcentrator, of a classifying jig comprising a screen and means forproducing pulsating currents "of and provided with a tail plateextending above the screen, vertically adjustable shields terminating attheir lower edges at different levels below the top of the tail plateand above the screen, a discharge conduit for slimes which pass over thetail plate and means for restrictin the volume of Water passin out withthe s imes, comprising avalve for ailjusting the discharge from saidshield; a conduit for material re-' quiring further treatment leadingfrom the higher shield to the'concentrator, a discharge conduit leadingfrom the lower shield and having a vertically adjustable inlet withinsaid shield, and a conduit from the crusher to the classif ing jig,substantially as described.

8. 1 h ap aratus for treating ore the combination wit a crusherand'a'con'centrator, of a classifying ji comprising a screen and meansfor pro ucing pulsations of water through the screen and rovided with atail 1: e screen and with shields arranged one Within the other with 4their lower edges at diflerent levels belowthe' top of the tail plateand above the screen, a I discharge conduit for slimes which pass overpulsations of water the tail plate, a discharge conduit .for material'rct uiring further treatment loading from the space but cen theshields to the concentrator, a discharge conduit for cmicentratesleading from the inner shield, and a conduit from the crusher to theclassifying jig, substantially as described.

9. in apparatus for treating ore the combination of a screen, a hutchsurrounding and extending above the screen and rovided above the screenwith an overflow tor light, floating or suspended material, and at alevel below that of the overflow with a submerged discharge, a shieldinterposed between said discharge and overflow and extending below theoverflow, means of restricting the flow of material through saiddischarge from the space cut oil by said shield, a second shield.located within said space, extending below the first shield and formingan inclosuro for concentrates, a discharge-conduit for concentratesleading from said inclosure, a water supply connection leading into thehutch and adapted to produce an upward current through the screen andthe jigging bed. thereon, and means for producing pulsations of thewater through the screen and jigging bed, substantially as described.

10. In apparatus for treating ore the combination of a screen, a hutchsurrounding and extending above the screen and provided above the screenwith an overflow and at a level below the overflow with a submergeddischarge, a shield interposed between said discharge and overflow andextending below the overflow, a shield r. ithin the space cut off by theother shield, a discharge conduit having a vertically adjustable inletwithin the p y connection leading into the hutch, and

means for producing pulsations of water through the screen and thejigging bed thereon, substantially as'deseribedi In witness hereof, wehereto affix our signatures in presence ol" two witnesses.

' FREDERICK l]. WOODEURY.

BENJAMIN HARRIS. CENTENNIAL HARRY BENEDlC'l.

of Benjamin pace cut oil by the inner shield, a r-xater sup-'

